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(FILES) This file photo taken on January 26, 2012 shows Nasdaq QMX Group CEO Robert Greifeld during the World Economic Forum meeting 2012 in Davos.
Nasdaq chief Robert Greifeld said November 29, 2016 he was worried about a US trade war with China but expects President-elect Donald Trump to adopt a pragmatic approach once he takes office."I do worry" about a trade war with China, "but we're mutually dependent," Greifeld said in a discussion at the Council on Foreign Relations three weeks after Trump's shock election victory.
/ AFP PHOTO / ERIC PIERMONTERIC PIERMONT/AFP/Getty Images